Code of Federal Regulations Title 47. Telecommunication § 47.80.211 Emission limitations

(1) On any frequency removed from the assigned frequency by more than 50 percent up to and including 150 percent of the authorized bandwidth:

at least 25 dB for transmitters installed before February 1, 1992,

at least 28 dB for transmitters installed on or after February 1, 1992;

(2) On any frequency removed from the assigned frequency by more than 150 percent up to and including 250 percent of the authorized bandwidth:  At least 35 dB;  and

(3) On any frequency removed from the assigned frequency by more than 250 percent of the authorized bandwidth:  At least 43 plus 10log₁₀ (mean power in watts) dB.

(1) Where the center frequency is removed from the assigned frequency by more than 50 percent up to and including 100 percent of the authorized bandwidth:  At least 25 dB;

(2) Where the center frequency is removed from the assigned frequency by more than 100 percent up to 250 percent of the authorized bandwidth:  At least 35 dB;  and

(3) On any frequency removed from the assigned frequency by more than 250 percent of the authorized bandwidth:  At least 43 plus 10log₁₀ (mean power in watts) dB.

(1) 125 dB at 1525.0 MHz, increasing linearly to 90 dB at 1612.5 MHz;

(2) 90 dB at 1612.5 MHz increasing linearly to 60 dB at 1624.0 MHz;

(3) 90 dB from 1624.0 MHz to 1650.0 MHz, except at frequencies near the transmitted carrier where the requirements of paragraphs (b)(1) through (3) of this section apply;

(4) 60 dB at 1650.0 MHz decreasing linearly to 90 dB at 1662.5 MHz;

(5) 90 dB at 1662.5 MHz decreasing linearly to 125 dB at 1752.5 MHz;  and

(6) 125 dB outside above range, except for harmonics which must comply with (b)(3) of this section.

(1) On any frequency removed from the assigned frequency by more than 50 percent, up to and including 100 percent of the authorized bandwidth:  at least 25 dB;

(2) On any frequency removed from the assigned frequency by more than 100 percent of the authorized bandwidth:  at least 30 dB.

(1) On any frequency removed from the assigned frequency by more than 50 percent, up to and including 100 percent of the authorized bandwidth:  At least 25 dB;

(2) On any frequency removed from the assigned frequency by more than 100 percent:  at least 30 dB.

(1) On any frequency removed from the assigned frequency by more than 50 percent up to and including 100 percent of the authorized bandwidth:  At least 25 dB;

(2) On any frequency removed from the assigned frequency by more than 100 percent up to and including 250 percent of the authorized bandwidth:  At least 35 dB;  and

(3) On any frequency removed from the assigned frequency by more than 250 percent of the authorized bandwidth:  At least 43 plus 10log₁₀ (mean power in watts) dB.